External resources
Associations
- ANSI - American National Standards Institute
- ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers
- ASPE - American Society of Plumbing Engineers
- ASTM - ASTM International (American Society for Testing and Materials)
- NFPA - National Fire Protection Association
- SMACNA - Sheet Metal and Air Conditioning Contractors' National Association
Other Links
- Fluid Switch
- American Standard
- Carrier Corporation
- Greenheck Fan Corporation
- Viking Group Inc.
- Rapid Tooling - Rapid Tooling company
- California windows by the largest manufacturer and direct replacement window and door company in Southern California